Sudden Gains in Internet-Based Cognitive Behavior Therapy for Body Dysmorphic Disorder

Area of Science:

• Psychiatry
• Clinical Psychology
• Behavioral Science

Background:

• Sudden gains correlate with improved treatment outcomes in various psychiatric conditions.
• Research on sudden gains in body dysmorphic disorder (BDD) is limited.
• Internet-based cognitive-behavior treatment (CBT) is an effective therapy for BDD.

Purpose of the Study:

• To investigate the occurrence and impact of sudden gains in individuals with BDD undergoing Internet-based CBT.
• To compare treatment outcomes between sudden gainers, gradual gainers, and non-sudden gainers.

Main Methods:

• Analysis of data from a randomized controlled trial of Internet-based CBT for BDD.
• Sample of 47 adults diagnosed with BDD.
• Comparison of outcomes at posttreatment and 3, 12, and 24-month follow-ups between sudden gainers and other groups.

Main Results:

• 12% of participants experienced sudden gains.
• Sudden gainers demonstrated significantly greater improvements in BDD symptoms compared to gradual gainers and non-sudden gainers at all time points.
• Sudden gainers exhibited higher rates of treatment response and remission.

Conclusions:

• Sudden gains in Internet-based CBT for BDD are associated with favorable short- and long-term treatment outcomes.
• Sudden improvement may serve as a prognostic marker for BDD treatment.
• Early identification of non-sudden gainers can inform tailored interventions and potentially improve outcomes.